[1] Rodney Brooks, [A robust layered control system for a mobile robot](http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1087032), IEEE Journal of Robotics and Automation, RA-2(1):14-23, 1986
[2] Jones, Flynn, and Seiger, ["Mobile Robots, Inspiration to Implementation"](http://legolab.cs.au.dk/DigitalControl.dir/NXT/Lesson7.dir/11128_Mobile_Robots_Inspiration_to_Implementation-Flynn_and_Jones.pdf), Second Edition, 1999.
[3] Fred G. Martin, Robotic Explorations: A Hands-on Introduction to Engineering, Prentice Hall, 2001.